James Corden becomes Taylor Swift's backing dancer in new Late Late Show sketch.

James Corden donned a fish net top and snake hoodie as he attempted to take the place of one of Taylor Swift’s backing dancers in a new comedy sketch.

In the segment for The Late Late Show, James fills in for the manager of the Los Angeles gig venue The Forum. He receives an urgent call that one of Taylor’s dancers had been injured.

James sported a see through-long sleeved top under a cropped sweatshirt with a snake design on the front as he told Taylor, “Use me, I will slot right in.”

He danced with the singer and her dance troupe to her song Look What You Made Me Do. James then volunteered to “do some stuff over the top” of Swift’s own vocals.

When Corden paused to visit the toilet, Swift urged her dancers, “Save yourselves. Go now, run, run, do not walk.”

Also during the segment, filmed backstage at the iHeartRadio Jingle Ball, James acted as security for Ed Sheeran. He used the code name “gingerbread man” for red-headed Ed. James also visited One Direction star Niall Horan to discuss his dressing room rider.

After checking that Niall had his required massage chair, red apples and coconut water, James also inquired if Niall had received his haemorrhoid cream.

Niall replied firmly: “That’s not my rider.” James appeared to get along better with Niall’s One Direction bandmate Liam Payne.